In-cell touch display panel structure

• US 9,459,481 B2
• Filed: 03/12/2013
• Issued: 10/04/2016
• Est. Priority Date: 03/13/2012
• Status: Active Grant

• Current Assignee: Superc-Touch Corporation
• Original Assignee: Superc-Touch Corporation
• Inventors: Lee, Hsiang-Yu
• Primary Examiner(s): Nguyen, Lauren
• Assistant Examiner(s): Quash, Anthony G
• Application Number:
  US13/795,788
• Publication Number:
  US 20130242211A1
• Time in Patent Office: 1,302 Days
• US Class Current: 1/1
• CPC Class Codes: G02F 1/13338 Input devices, e.g. touch panels
• CPC Class Codes: G06F 3/0412 Digitisers structurally integrated in a display
• CPC Class Codes: G06F 3/0443 using a single layer of sensing electrodes
• CPC Class Codes: G06F 3/0448 Details of the electrode shape, e.g. for enhancing the detection of touches, for generating specific electric field shapes, for enhancing display quality

Abstract

An in-cell touch display panel includes a first substrate, a second substrate parallel to the first substrate, a liquid crystal layer configured between the first and second substrates, and a black matrix layer disposed at a surface of the first substrate facing to the liquid crystal layer. The black matrix includes a plurality of opaque conductive lines. The opaque conductive lines are divided into a first group, a second group and a third group of opaque conductive lines. The second group of opaque conductive lines is formed with N polygonal regions where N is a positive integer. The opaque conductive lines in any one of the polygonal regions are electrically connected together while any two polygonal regions are not electrically connected.

Claims

1. An in-cell touch display panel structure, comprising:

a first substrate;

a second substrate parallel to the first substrate;

a liquid crystal layer configured between the first substrate and the second substrates; and

a black matrix layer disposed at one surface of the first substrate and facing the liquid crystal layer;

wherein the black matrix layer is composed of a plurality of opaque conductive lines, the plurality of opaque conductive lines of the black matrix layer are arranged in a first direction and a second direction, and the plurality of opaque conductive lines are divided into a first group of opaque conductive lines, a second group of opaque conductive lines, and a third group of opaque conductive lines, the second group of opaque conductive lines being formed to be N polygonal regions, where N is a positive integer, the opaque conductive lines in any one of the polygonal regions being electrically connected together while any two polygonal regions are not electrically connected and every polygonal region is a sensor electrode for touch sensing, the third group of opaque conductive lines being formed to be N conductive traces, each of the N conductive traces being electrically connected to a corresponding polygonal region, while any two conductive traces are not electrically connected, so as to form a single-layered touch pattern on the black matrix layer, in which the first group of opaque conductive lines, the N polygonal regions and the N conductive traces are of the same layer and the first group of opaque conductive lines is spaced apart from the N polygonal regions and the N conductive traces.

2. The in-cell touch display panel structure as claimed in claim 1, wherein the first direction is perpendicular to the second direction.

3. The in-cell touch display panel structure as claimed in claim 2, further comprising a color filter layer that is disposed among the plurality of opaque conductive lines of the black matrix layer and on a surface of the plurality of opaque conductive lines.

4. The in-cell touch display panel structure as claimed in claim 3, further comprising an over coating layer disposed on a surface of the color filter.

5. The in-cell touch display panel structure as claimed in claim 4, further comprising a common electrode layer disposed between the first substrate and the second substrate.

6. The in-cell touch display panel structure as claimed in claim 5, further comprising:

a first polarizer layer disposed at one surface of the first substrate opposite to the other surface of the first substrate facing the liquid crystal layer;

a second polarizer layer disposed at one surface of the second substrate opposite to the other surface of the second substrate facing the liquid crystal layer,

a thin film transistor (TFT) layer disposed at the surface of the second substrate facing the liquid crystal layer.

7. The in-cell touch display panel structure as claimed in claim 6, wherein each of the polygonal regions is formed in a triangle, square, rhombus, hexagon, octagon, or round shape.